Michelle Anthony sells gourmet chocolate chip cookies. The results of her last month of operations are as follows: Sales revenue $48,500 Cost of goods sold (all variable) 27,500 Gross margin 21,000 Selling expenses (70 % variable) 8,000 Administrative expenses (20% variable) 12,000 Operating income $1,000 (a) x Your answer is incorrect. What is Michelle's degree of operating leverage? (Round answer to 2 decimal places, eg. 52.75) Operating leverage 1,300